Carbonizing apparatus.



A. F. ROCKWELL.

GARBONIZING APBARATUS.

APPLICATION FILED JAN.10,1910.

975,077; Patented N0v. 8,1910.

WITNESSES:

' INIVENIOR: yw z f PM 76; ATTORNEY,

UNITED STATES PATENT OFFICE.

ALBERT F. ROCKWELL, OF BRISTOL, CONNECTICUT, ASSIGNOR TO THE NEW DEPAR- TUBE MANUFACTURING COMPANY, OF BRISTOL, CONNECTICUT, A CORPORATION OF CONNECTICUT.

CARBONIZING APPARATUS.

Application filed January 10, 1910.

a citizen of the United States, residing at Bristol, county of Hartford, State of Connecticut, have invented a. certain new and useful Carbonizing Apparatus, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

My invention relates to carbonizing apparatus, and more-particularly to such apparatus in which a carbon-bearing fluid is introduced into the receptacle holding the material to be treated One object is to provide an apparatus in which the-fluid is supplied to the material operated upon without reducing the temperature of such material.

A further object is to provide means for determining the temperature of such material.

To these ends, and also to improve generally upon apparatus of the characterindicated, my invention consists in the various matters hereinafter described and claimed.

In the accompanying drawings, Figure 1 is an elevation, on about the line 11 of Fig; 2, of a furnace embodying my invention; and Fig. 2 is a view on about the line 2-2 of Fig. 1.

In saiddrawings,1 indicates the furnace wall which incloses the fire chamber 2. Nozzles 3 are shown for the introduction of gas or oil for heating, and the smoke pipe is indicated at 30. Within the fire chamber is a heating chamber 4, conveniently produced by a surrounding wall 5 extending from top to bottom of the furnace and having its top of the heating chamber 4, as by the standard 11, and the outlet 9 is at the top ofthe flask. A valve-controlled inlet 12 for the carbonizing fluid enters the heating chamber 4.

- Specification of Letters Patent.

creates in said heating chamber, enters the flask through the inlets 8 and having to force its Way upwardly through the mass of Patented Nov. 8, 1910.

Serial No. 537,192.

The material to be treated being placed in the flask 7 and the furnace being properly heated, say until the heating chamber 4 is at a red heat, the carbonizing fluid, preferably a hydrocarbon oil, is introduced into the chamber 4. The heat of said chamber immediately converts said oil into gas and heats such gas to a high temperature, after which the gas, under the pressure which it material covering said inlets, intimately mingles with the material in the flask, thus carbonizing said material in a well under.- stood manner, after which the gas escapes through the outlet 9. As the heating chamber is betweenthe fire chamber and the flask, the temperature of the heating chamber is necessarily always as great as that of thematerial in the flask, and as the gas is heated in said heating chamber 4 before it flows into the flask, the incoming gas does not lower the temperature of the material in the flask; on the contrary, unless and until the material reaches the temperature of the gas, the heat of the gas itself assists in heating such material, in which event the temperature of the incoming gas assists rather than retards the o eration of carbonizing or cementation. Tie incoming gas at no time relatively chills the material in the flask adjacent the gas inlet. Preferably. the chamber 4 is air tight so that a metal flask can be employed without danger of oxidation.

If desired,'the gas from the flask 7 can be utilized for heating the furnace. For example, the outlet pipe 9 can lead to the fire chamber through the pipe 13. I prefer to place a pyrometer 14 in the outlet pipe 9 near the flask so that the temperature of the gas, and, consequently, the temperature of the interior of said flask, and of the material being treated, can at all times be readily and accurately ascertained.

Having thus described my invention, what- I claim as new and desire to secure by Letters Patent is.

1. A carbonizing apparatus comprising a fire chamber, a flask, a heating chamber be tween said flaskand said fire chamber, means for introducing a carbon-bearing fluid into said heating chamber and there heating said fluid, and means for introducing such heated 110 fluid into said flask; substantially as described.

2. Acarbonizing apparatus com rising a heating chamber, a flask surrounded by said chamber and having a fluid inlet opening into said chamber, and means for introducing a carbon-carrying fluid into said chum-"- ber substantially as described.

3. A carbonizing apparatus com rising an air tight heating chamber, a flas: in said chamber and havinga fluid inlet opening into said chamber, and means for introduc ing a carbon-carrying fluid into said chamber; substantially as described.

4. A carbonizin ap aratus comprising a 15 flask, a heating 0 am r surrounding the same and having a fluid inlet opening into said flask, a fire chamber about said heat- ALBERT F. ROCKWELL.

Witnesses:

' Josnrn D. 'BROWN,

GEORGE L. SANFORD; 

